Radiator made of wrought-iron.



H. STEPFEN.

RADIATOR MADE OF WROUGHT IRON.

Patented Nov. 18, 1913.

RADIATOR MADE OF WROUGHT-IRON.

Specification of Letters Patent.

Patented Nov. 18, 1913.

Application filed March 8, 1913. Serial No. 752,838.

To all whom it may concern:

Be it known that I, HEINRICH SrErrEN, engineer, a subject of the German Emperor, and residing at Tonndorf-Lohe, near Altrahlstedt, near Hamburg, Germany, have invented certain new and useful Improvements in Radiators Made of WVrought-Iron, of which the following is a specification.

Besides the radiators made of cast iron, such radiators for central heating plants are known, the individual members of which are made of seamless wrought iron tubes, or parts rolled together in form of tubes or of corrugated sheet metal.

The radiator according to the present invention differs from other known radiators made of wrought iron by its consisting of two equal parts out in a suitable shape of wrought iron plate and rolled to acute angles or sharp corners, so that radiator webs and longitudinal walls are formed, whereupon the webs are closed together at top and bottom and the seams are autogenous welded. By means of a top and a bottom capping tube the seamed two halves are then joine to one integral radiator, so that all radiator webs and the longitudinal walls form one continuous closed radiator chamber.

In the accompanying drawing the present invention is exemplified in a constructional form. V

Figure 1 is a side elevation of the radiator. Fig. 2 is an end view of the radiator. Fig. 3 is a radiator in plan View. Fig. 4 is a section on the line AB in Fig. 2. Fig. 5 shows parts of the cut out plate. Fig. 6 is a top View of the same after rolling. Fig. 7 is a capping tube.

The radiator is composed of two equal, wrought iron parts out out in a suitable shape, corresponding in height and length to the radiator to be made, as shown in Fig. 5. These pieces are sent through a suitably profiled rolling mill and thereby given such a shape, that alternately V-shaped webs h and longitudinal walls Z are formed, the webs being provided with substantially quadrantal extensions that project respectively beyond the upper and lower edges of the walls. With the object of giving the radiators a greater rigidity and strength and preventing their being indented two or more webs 1' are impressed by means of shaped dies into the webs h in a longitudinal direction, smoothing out into the said radiator webs at top and bottom. By a slight pressure of a press the top and bottom edges is of the radiator webs h are thereupon uniformly bent toward the center, so that seams p are formed, which are then autogenous welded, and close the radiator halves at top and bottom. The outer walls 10 of the two outermost webs h (Fig. 6) have been cut sufficiently longer, so that their edges 6 will meet when the two radiator halves are assembled, and form seams a, which are autogenous welded or brazed, so that the two radiator halves are joined to one integral radiator. For closing the latter at top and bottom, where it still gapes between the longitudinal walls and the webs, capping tubes 7) are provided. These capping tubes 11 are cut out or notched to correspond to the shape of the webs 7L and the longitudinal walls Z and are made so wide, that their walls will overlap the ends of the radiator webs and longitudinal walls, so that these are all well jointed whereupon the seams thus formed are autogenous welded. The capping tubes 1) serve for the entrance and outlet of the hot water. By such means a radiator is produced which forms one continuous closed chamber.

The new radiators may be made of any length and with any number of radiator webs after the hereinbefore described method and be combined in any desirable manner.

The essential feature consists in that all radiator webs of the radiator are rolled with acute angles or corners of one piece of sheet metal, the top and bottom edges of these webs then closed by the light pressure of a press, toward the center, without the material being extended or stretched, the seams thus formed welded and the remaining openings between the longitudinal walls and radiator webs closed by means of capping tubes, whereupon all seams are autogenous welded so that a radiator is produced, which forms one continuous closed heating chamher.

I claim:

A radiator comprising two opposed wrought iron sections, each section being composed of a plurality of V-shaped webs and intermediate straight longitudinal upright walls integral with said webs, the webs extending at their top and bottom at a dislap the ends of the Walls and being provided tance beyond the Walls and being here pro- With a plurality of notches accommodating vided with lnwardly projecting substanthe quadrantal extensions.

tially quadrantal extensions, and upper and HEINRICH STEFFEN. lower capping tubes that extend longitudi- WVitnesses:

nally over the Wrought iron sections, said ALFRED HAUPT,

capping tubes being partly cut out to over- AUGUST PEROMBURG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

Washington, D. C. 

